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ZK61A Magnesium vs. SAE-AISI 1095 Steel

ZK61A magnesium belongs to the magnesium alloys classification, while SAE-AISI 1095 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ZK61A magnesium and the bottom bar is SAE-AISI 1095 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.8 to 7.1
10 to 11
Fatigue Strength, MPa 120 to 140
310 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Shear Strength, MPa 170 to 180
400 to 540
Tensile Strength: Ultimate (UTS), MPa 290 to 310
680 to 900
Tensile Strength: Yield (Proof), MPa 180 to 200
500 to 590

Thermal Properties

Latent Heat of Fusion, J/g 330
240
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 960
470
Thermal Conductivity, W/m-K 120
47
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
11

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.8
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 23
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 940
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 19
63 to 84
Resilience: Unit (Modulus of Resilience), kJ/m3 370 to 420
660 to 930
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 42 to 45
24 to 32
Strength to Weight: Bending, points 50 to 53
22 to 26
Thermal Diffusivity, mm2/s 65
13
Thermal Shock Resistance, points 17 to 18
22 to 29

Alloy Composition

Carbon (C), % 0
0.9 to 1.0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
98.4 to 98.8
Magnesium (Mg), % 92.1 to 93.9
0
Manganese (Mn), % 0
0.3 to 0.5
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 5.5 to 6.5
0
Zirconium (Zr), % 0.6 to 1.0
0
Residuals, % 0 to 0.3
0